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Search found 5 matches

by mastermoses
21 Dec 2020, 15:14
Forum: Post-estimation analysis/use of results
Topic: Joint RP/SP estimation: interpretation of mu and estimates
Replies: 5
Views: 14200

Re: Joint RP/SP estimation: interpretation of mu and estimates

Hi Stephane,

thank you for the quick reply. As I understood it, it is not common to use different scales for different alternatives in prediction, right?

Best
Michael
by mastermoses
21 Dec 2020, 14:41
Forum: Post-estimation analysis/use of results
Topic: Joint RP/SP estimation: interpretation of mu and estimates
Replies: 5
Views: 14200

Re: Joint RP/SP estimation: interpretation of mu and estimates

Hi Stephane,

unfortunately I cannot share any file since this work is confidential and not published yet. However, I use seperate models or each data source and combine them with apollo_combineModels. For the mu, I have

cnl_settings$V = lapply(V, "*", mu_*) % where the mu_* stands for the mu of ...
by mastermoses
11 Dec 2020, 11:03
Forum: Model specification
Topic: CNL models with individual alphas
Replies: 2
Views: 8991

Re: CNL models with individual alphas

Hi David,

thanks for your suggestion, it worked perfectly for my case! I am looking forward to see those features in future version of Apollo.

Best,
Michael
by mastermoses
11 Dec 2020, 11:02
Forum: Post-estimation analysis/use of results
Topic: Joint RP/SP estimation: interpretation of mu and estimates
Replies: 5
Views: 14200

Joint RP/SP estimation: interpretation of mu and estimates

Hi all,

I recently estimated a mode choice model based on RP and SP data. Some alternatives are only available in the SP data and hence, there are parameters (e.g., travel time parameters for these modes) which are only estimated based on the SP data. The mu of the SP data is around 0.5, whereas ...
by mastermoses
04 Dec 2020, 07:47
Forum: Model specification
Topic: CNL models with individual alphas
Replies: 2
Views: 8991

CNL models with individual alphas

Hi,

I am currently estimating CNL models for mode choice based on SP-RP data. The SP data was mainly conducted among users of a ride pooling service. Depending on their ride pooling usage (one time user vs. regular user), the alphas vary heavily. So, I wondered if there is a possibility to use ...